A Dutch filmmaker has organized a series of digs for lost Nazi riches in a small Bavarian town -- spurred by a sheet of music some claim is actually a coded treasure map.

Spiegel Online reports Leon Giesen, 51, has led three attempts in recent weeks to unearth the rumored buried loot in Mittenwald, near the Austrian border â€“ after the townâ€™s officials signed off on the hunt.

The strange sequence centers on the recent public revelation of an annotated score of the â€œMarch Impromptu,â€ a piece of music by composer Gottfried Federlein, the news agency reports.